Steno Bredanensis Female Skull Replica measures 20 inches. Steno Bredanensis Female Skull is museum quality polyurethane resin cast. 2-part skull (separate cranium and jaw). Made in USA. Known as Rough-Toothed Dolphin

The Steno Bredanensis or Rough-toothed Dolphin is a species of dolphin that can be found in deep warm and tropical waters around the world.

The rough-toothed dolphin or Steno bredanensis is a relatively large species, with adults ranging from 6.9 to 9.3 ft. in length, and weighing between 198 and 342 lb. Males are larger than females.

Its most visible characteristic feature is its conical head and slender nose; other dolphins either have a shorter snout or a more visibly bulging melon on the forehead.

Rough-toothed dolphins have been reported to bow-ride on a number of occasions, although apparently they do not do so as frequently as many other dolphin species.

They commonly “skim”, by swimming with their heads and chin above the surface of the water. They are known to be able to dive to at least 160 ft. and be able to stay underwater for at least fifteen minutes.

The Steno Bredanensis or Rough-toothed Dolphin echolocation clicks are unusually brief, lasting no more than 0.2 seconds, and have a relatively low frequency, ranging from 2.7 to 256 kHz, with a maximum peak frequency of 25 kHz. They also make longer whistles with a frequency between 3 and 12 kHz.

The Steno Bredanensis or Rough-toothed Dolphin population is not believed to be threatened by human activities.

Sadly, an unknown number of individuals have been harpooned by Japanese whalers and pods are also slaughtered in the Taiji drive hunts. Hopefully soon this cruel and unethical behavior of slaughtering will be exterminated.

Others have been caught in seine nets by trawlers fishing for tuna.
The rough-toothed dolphin is covered by the Agreement on the Conservation of Small Cetaceans of the Baltic, North East Atlantic, Irish and North Seas (ASCOBANS).

They are also covered by the Agreement on the Conservation of Cetaceans in the Black Sea, Mediterranean Sea and Contiguous Atlantic Area (ACCOBAMS).

The species is further included in the Memorandum of Understanding Concerning the Conservation of the Manatee and Small Cetaceans of Western Africa and Macaronesia (Western African Aquatic Mammals MoU) and the Memorandum of Understanding for the Conservation of Cetaceans and Their Habitats in the Pacific Islands Region (Pacific Cetaceans MoU).